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  "publishedAt": "2026-06-09T21:19:13.000Z",
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  "textContent": "Matthias Bastian / The Decoder: Anthropic says Fable 5 has invisible safeguards that use prompt modification, steering vectors, or PEFT to limit its effectiveness for frontier LLM development — Key Points … Ask about this article... Both models share the same base model. Fable 5 ships with…",
  "title": "Anthropic says Fable 5 has invisible safeguards that use prompt modification, steering vectors, or PEFT to limit its effectiveness for frontier LLM development (Matthias Bastian/The Decoder)"
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